1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frozen [14]
3 years ago
12

PLEASE SHOW YOUR WORK!!! (solve system of equations by adding, subtracting, or multiplying.)

Mathematics
1 answer:
Aliun [14]3 years ago
5 0
Hey friend, hope I can assist you!
I will solve by elimination <3.
Multiply 3x - 7y = 2 by 2: 6x - 14y = 4
6x - 14y = 4
6x - 9y = 9
5y = 5
Now we have
6x - 14y = 4
5y = 5
Now we want to solve 5y = 5 for y
So simply divide both sides by 5.
5y/5 = 5/5
This gives us one or in other words, y = 1.
Now we want to plug y = 1 into  6x - 14y = 4
So 6x - 14 * 1 = 4
This gives us
6x - 14 = 4
Now add 14 to both sides.
6x - 14 + 14 = 4 + 14
6x = 18
Now divide both sides by 6
6x/6 = 18/6
This gives us 3 so x = 3
Therefore our solutions to this system of equations would be y = 1 and x = 3

You might be interested in
Graph 2x-5=2x+8 please
lapo4ka [179]
2x-5=2x+8
-5=8

y=2x-5
y=2x+8

4 0
3 years ago
Help?? I don't get it!
Gala2k [10]
The answer should be y=-4x^2
4 0
2 years ago
Read 2 more answers
Average precipitation for the first 7 months of the year, the average precipitation in toledo, ohio, is 19.32 inches. if the ave
Colt1911 [192]
Part A:

The probability that a normally distributed data with a mean, μ and standard deviation, σ is greater than a given value, a is given by:

P(x\ \textgreater \ a)=1-P(x\ \textless \ a)=1-P\left(z\ \textless \  \frac{a-\mu}{\sigma}\right)

Given that the average precipitation in Toledo, Ohio for the past 7 months is 19.32 inches with a standard deviation of 2.44 inches, the probability that <span>a randomly selected year will have precipitation greater than 18 inches for the first 7 months is given by:

P(x\ \textgreater \ 18)=1-P(x\ \textless \ 18) \\  \\ =1-P\left(z\ \textless \ \frac{18-19.32}{2.44}\right) \\  \\ =1-P(z\ \textless \ -0.5410) \\  \\ =1-0.29426=\bold{0.7057}



Part B:

</span>The probability that an n randomly selected samples of a normally distributed data with a mean, μ and standard deviation, σ is greater than a given value, a is given by:

P(x\ \textgreater \ a)=1-P(x\ \textless \ a)=1-P\left(z\ \textless \ \frac{a-\mu}{\frac{\sigma}{\sqrt{n}}}\right)

Given that the average precipitation in Toledo, Ohio for the past 7 months is 19.32 inches with a standard deviation of 2.44 inches, the probability that <span>5 randomly selected years will have precipitation greater than 18 inches for the first 7 months is given by:

</span>P(x\ \textgreater \ 18)=1-P(x\ \textless \ 18) \\ \\ =1-P\left(z\ \textless \ \frac{18-19.32}{\frac{2.44}{\sqrt{5}}}\right) \\ \\ =1-P(z\ \textless \ -1.210) \\ \\ =1-0.1132=\bold{0.8868}
7 0
3 years ago
Please help, see attachment for equation!
Alekssandra [29.7K]

Answer:

The answer to your question is the last option

Step-by-step explanation:

Quadratic equation

                                2 = - x + x² - 4

Order the equation from the highest power to the lowest power. Do not consider 2 because it is not consider in the options given.

                               x² - x - 4  = 0

Identify a, b and c

                              (1) x² -(1) x - 4 = 0

    a = 1    b = -1    c = - 6      

Substitution              

                              \frac{-(-1) +- \sqrt{(-1)^{2} - 4(1)((-4)}}{2(1)}

3 0
3 years ago
3/24 simplified fraction
Julli [10]

Answer:

The lowest fraction it can be simplified to is 1/8.

4 0
2 years ago
Read 2 more answers
Other questions:
  • "given a population in which the probability of success is p = 0.20, if a sample of 500 items is taken, then calculate the proba
    11·1 answer
  • Over four evenings, Ms.Cross grades 6 papers, 8 papers, 9 papers, and 7 papers. She wants to grade an average of 9 papers a nigh
    7·1 answer
  • A farmer's truck is carrying 4 2⁄3 tons of hay and straw. If 3 2⁄5 tons of the load is hay, how much straw is the truck carrying
    7·2 answers
  • Find the slope of the line (-7,3) (6,3)
    10·1 answer
  • PLEASE HELP .
    8·1 answer
  • What is the equation of a circle with radius 23 and whose center is the intersection of the lines y=2x+1 and 4x+y=13?
    8·1 answer
  • Just need help 1-3 because it’s not easy
    13·1 answer
  • PLEASE HELP
    8·1 answer
  • Each edge of this cube is 6.7 cm long.<br> Work out <br> a) volume<br> b) surface area
    5·2 answers
  • How many cubic meters in 179.66 cubic centimeters​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!